<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            padding: 0;
            margin: 0;
        }

        .container {
            margin: 0 auto;
            width: 610px;
            height: 400px;
            /* border: 1px solid black; */
            display: flex;
            flex-wrap: wrap;
        }

        .a {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            border: 1px solid red;
            /* z-index: 10; */
        }

        .b {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            border: 1px solid yellow;
        }

        .c {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            border: 1px solid blue;
        }

        .d {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            border: 1px solid black;
            margin-left: 95px;
            margin-top: -100px;
        }

        .e {
            width: 200px;
            height: 200px;
            margin-left: 20px;
            border-radius: 50%;
            border: 1px solid green;
            margin-top: -100px;
        }

        .san {
            margin-left: 100px;
            width: 0px;
            height: 0px;
            border-left: 100px solid black;
            border-bottom: 100px solid red;
            border-right: 100px solid green;
            border-top: 100px solid yellow;
        }




        .qw {
            width: 100%;
            height: 100px;
        }
    </style>
</head>

<body>
    <button onclick="a()">dianjiashuaxin</button>


    <div class="container">
        <div class="a"></div>
        <div class="b"></div>
        <div class="c"></div>
        <div class="d"></div>
        <div class="e"></div>
    </div>

    <div class="san">

    </div>

    <div class="qw">

    </div>

</body>


<script>
    function a() {
        location.reload([true])
        console.log("ok")
    }
</script>


</html>